I have created here, a gallery of Rockbox fonts converted from BDF from various sources. Most come from the X.org X server, but see each page for details. The Hebrew section that used to be here has been dropped, and the fonts are now instead available along with other encodings in the misc section. Look for ISO-8859-8. I noticed that just recently a bug was opened against convbdf, saying that it segfaults on some large files, and indeed it does. I hadn't previously noticed that. This unfortunately means that a few of the very largest fonts may be broken.